SDR SWIA971440

Service difficulty report · Np Indication · Emb EMB120RT

Difficulty date
March 4, 1999
Submitted
March 26, 2000
Operation
Air carrier
Aircraft
N1105G
Make and model
Emb EMB120RT
Aircraft serial
120105
Engine
Pwa PW118
Part
Np Indication
Condition
Oscillation
Location
Right Engine
Stage of operation
CL
Nature of condition
O
Precautionary procedure
A

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

AFTER DEPARTURE AND ON CLIMBOUT NP OSCILLATES BETWEEN 99.2 PERCENT AND 1001 PERCENT. WHEN 85 PERCENT NP WAS SET, OSCILLATIONS WERE +.4 PERCENT. RIGHT ENGINE NP FLUCTUATIONS ARE STILL WITHIN ACCEPTABLE LIMITS AT THIS TIME PER EMBRAER OPERATIONAL BULLETIN 120-003/92. (NP FLUXUATIONS OF +/- 1 PERCENT ARE ACCEPTABLE.) OPERATIONAL TEST FLIGHT CONFIRMS NP FLUCTUATIONS WITHIN LIMITS.

More about the Emb EMB-120RT